title: A microbiological study of non-gonococcal proctitis in passive male homosexuals.
mesh_terms: D005243:Feces / Q000382:microbiology; D006716:Homosexuality; D006801:Humans; D008297:Male; D009344:Neisseria gonorrhoeae / Q000302:isolation & purification; D011349:Proctitis / Q000209:etiology / Q000382:microbiology*; D011446:Prospective Studies; D012007:Rectum / Q000382:microbiology